python – Django错误— index()缺少1个必需的位置参数：’pk’

这是我在浏览器中出现的错误：

TypeError at /batches/
index() missing 1 required positional argument: 'pk'
Request Method: GET
Request URL:    http://127.0.0.1:8000/batches/
Django Version: 1.11.1
Exception Type: TypeError
Exception Value:    
index() missing 1 required positional argument: 'pk'
Exception Location: /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/core/handlers/base.py in _get_response,line 185
Python Executable:  /Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6
Python Version: 3.6.1
Python Path:    
['/Users/cohen/Documents/project/sanctions','/Users/cohen/Documents/project/sanctions','/Library/Frameworks/Python.framework/Versions/3.6/lib/python36.zip','/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6','/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/lib-dynload','/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages','/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/PyObjC']
Server time:    Mon,24 Jul 2017 10:47:02 +0000

我的网址分批

from django.conf.urls import url
from . import views

urlpatterns = [
    # /batches/
    url(r'^$',views.index,name='index'),# /batches/2
    url(r'^(?P<batches_id>[0-9]+)/$',views.detail,name="detail"),# businessname/1
    url(r'^(?P<businessname_id>[0-9]+)/$',views.index_businessname,name="detail_businessname"),# individuals/1
    url(r'^(?P<individuals_id>[0-9]+)/$',views.index_individuals,name="detail_individuals"),]

意见：

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from .models import BusinessName
from .models import Individuals
from .models import Batches

from django.shortcuts import render
from django.http import HttpResponse

# Create your views here.
def index(request,pk):
    all_Batches = Batches.objects.all()
    html = ''
    for batch in all_Batches:
        url = '/batches/' + str(batch.id) + '/'
        html += '<a href="#"' + url + '">' + str(batch.BatchNumber)+ '</a><br>'
    return  HttpResponse(html)

def detail(request,batch_id):
    return HttpResponse("<h2>Details for Batches ID:"  + str(batch_id) + "</h2")


def index_businessname(request):
    all_BusinessNames = BusinessName.objects.all()
    html = ''
    for bn in all_BusinessNames:
        url = '/businessname/' + str(bn.id) + '/'
        html += '<a href="#"' + url + '">' + bn.FullName + '</a><br>'
    return HttpResponse(html)

def detail_businessnames(request,bn_id):
    return HttpResponse("<h2>Details for Business Names ID:"  + str(bn_id) + "</h2")

def index_individuals(request):
    all_individuals = Individuals.objects.all()
    html = ''
    for i in all_individuals:
        url = '/individuals/' + str(i.id) + '/'
        html += '<a href="#"' + url + '">' + i.FullName + '</a><br>'
    return HttpResponse(html)


def detail_individuals(request,i_id):
    return HttpResponse("<h2>Details for Individual Names ID:"  + str(i_id)+ "</h2")

先感谢您,
科恩